9:30am Reynolds arrives at Buford's position west of Gettysburg. The vanguard of the I Corps is following. Buford prepares his men for withdrawal.

10:00 I Corps (Cutler) begins deploying along southern McPherson Ridge in front of Archer's Rebels. Davis, north of Chambersburg Pike, has already taken northern end of the ridge. Iron Brigade (Meredith) switches from marching column to battleline by regiment near the Lutheran Seminary.